Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

stargazine_ep34_banner.thumb.jpg.28dd32d9305c7de9b6591e6bf6600b27.jpg

Recommended Posts

Hello,

I woke up at the ludicrous time of 5am to figure out if Saturn would be visible from my garden.

Thankfully it will be nicely placed between 2 trees for about a hour.

The next clear morning I will therefore be setting up and having a first go at another planet (I have only seen jupiter so far).

I was just wondering if anybody has any tips for focusing on Saturn? I understand it will be a lot smaller than Jupiter through my 200p. Plus for Jupiter, I use its moons to achieve perfect focus whereas I won't be able to do this with Saturn.

I've never tried focusing on a star through the camera before and am a little bit skeptical as to how accurate this will be for a planet.

Thanks,

Dan

Share this post


Link to post
Share on other sites

Hi Dan,

With it's rings Saturn, is about the same size as Jupiter, even though He's much farther away than his big bro. Use the rings and the gap between them and the planet to focus on. I got chance for a sweet little peek this morning too. I used my Bahtinov mask to focus, and could see it nicely with it on. So you should have no trouble with the 8".

Baz.

Share this post


Link to post
Share on other sites

I would try focusing on a star or Jupiter prior to Saturn with the naked eye at the EP, or better still with a bhatinov mask. If you can leave the scope focused then ready for Saturn great, if not then just use a bright star immediately before you go for Saturn. Because they are all so far away, infinite focusing will work, in much the same way as a camera lens will focus on something a mile away or ten miles away - beyond a certain distance it doesn't really make that much difference.

I made my own bhatinov mask from a downloadable template (google) and it took me half an hour to cut it out. It works spot on and allows me to focus perfectly using the live view on my Pentax Kx.

Good luck :)

Share this post


Link to post
Share on other sites

If the moon is out, I always use it to get the focus right. If not, I either try to get the focus as good as I can and test my skills or use the a planets moons and get them down to the smallest point possible.

For planetary imaging, people tend to use any where from f/10 all the way up to f/50. At an f/ratio like that, the difference of distance between a star and the planet is not a problem at all. And most, if not all, telescope are focused to infinity when looking at the moon or planets or anything further out.

Josh

Edited by Josh Wilson

Share this post


Link to post
Share on other sites

As mentioned above the Cassini division should be a good feature to focus on, it will be a very narrow black line. Either that or Titan which will be a tiny disc. Both these are assuming seeing conditions allow these details to be visible.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By bomberbaz
      So I originally planned to go to a good vantage point from the top of Pendle hill, watch out for witches whilst there. It is a local and well known Lancastrian landmark. However my wife is recovering from hospital treatment and so I didn't want to leave her so made do much closer to home.
      A short drive (2 minutes) took me to a place aside the motorway slip road but with a clear-ish view of the setting planets. I was only use 10x30 bins so the view was not particularly well defined but still impressive when considering distances and such. 
      Anyway it is in the bag but would like to do better if at all possible. 
      If the skies are more obliging tomorrow I may venture out with the EEVA set up and grab some data, however the forecast is not so good.
      Cheers
    • By theonlypromg
      The Great Conjunction
      who else waiting for the Great Conjunction between Saturn and Jupiter in 21 December 2020
      Click here to watch
       
       
       
    • By DiZZyViZiON
      Hi. Complete newbie to the hobby here. Just purchased a Meade Lightbridge 130 for my daughter as an upgrade to her Skywatcher Infinity 76. I'd like for her to see the rings of Saturn sometime with her new scope. Would getting a better lens improve her chances of a good view of the rings of Saturn? And if so, what lens would you recommend. Thank you
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.